Wind turbine



FIG. 1 is a rear elevation view of a wind turbine showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a bottom plan view thereof.

No claim is made to the supporting element shown in broken lines which is included for environmental purposes only.

The pole element shown broken-away is for convenience of illustration and claims no particular length. 

I claim the ornamental design for a wind turbine, as shown and described above. 